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Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu
In the traditional fermentation process of strong-aroma Baijiu, a fermentation pit mud (FPM) provides many genera of microorganisms for fermentation. However, the functional microorganisms that have an important effect on the quality of Baijiu and their changes with the age of fermentation pit (FP)...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Exeley Inc.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7324862/ https://www.ncbi.nlm.nih.gov/pubmed/32396715 http://dx.doi.org/10.33073/pjm-2020-018 |
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author | WANG, XU-JIA ZHU, HONG-MEI REN, ZHI-QIANG HUANG, ZHI-GUO WEI, CHUN-HUI DENG, JIE |
author_facet | WANG, XU-JIA ZHU, HONG-MEI REN, ZHI-QIANG HUANG, ZHI-GUO WEI, CHUN-HUI DENG, JIE |
author_sort | WANG, XU-JIA |
collection | PubMed |
description | In the traditional fermentation process of strong-aroma Baijiu, a fermentation pit mud (FPM) provides many genera of microorganisms for fermentation. However, the functional microorganisms that have an important effect on the quality of Baijiu and their changes with the age of fermentation pit (FP) are poorly understood. Herein, the Roche 454 pyrosequencing technique and a phospholipid fatty-acid analysis were employed to reveal the structure and diversity of prokaryotic communities in FPM samples that have been aged for 5, 30, and 100 years. The results revealed an increase in total prokaryotic biomass with an FP age; however, Shannon’s diversity index decreased significantly (p < 0.01). These results suggested that a unique microbial community structure evolved with uninterrupted use of the FP. The number of functional microorganisms, which could produce the flavor compounds of strong-aroma Baijiu, increased with the FP age. Among them, Clostridium and Ruminococcaceae are microorganisms that directly produce caproic acid. The increase of their relative abundance in the FPM might have improved the quality of strong-aroma Baijiu. Syntrophomonas, Methanobacterium, and Methanocorpusculum might also be beneficial to caproic acid production. They are not directly involved but provide possible environmental factors for caproic acid production. Overall, our study results indicated that an uninterrupted use of the FP shapes the particular microbial community structure in the FPM. This research provides scientific support for the concept that the aged FP yields a high-quality Baijiu. |
format | Online Article Text |
id | pubmed-7324862 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Exeley Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-73248622020-07-01 Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu WANG, XU-JIA ZHU, HONG-MEI REN, ZHI-QIANG HUANG, ZHI-GUO WEI, CHUN-HUI DENG, JIE Pol J Microbiol Microbiology In the traditional fermentation process of strong-aroma Baijiu, a fermentation pit mud (FPM) provides many genera of microorganisms for fermentation. However, the functional microorganisms that have an important effect on the quality of Baijiu and their changes with the age of fermentation pit (FP) are poorly understood. Herein, the Roche 454 pyrosequencing technique and a phospholipid fatty-acid analysis were employed to reveal the structure and diversity of prokaryotic communities in FPM samples that have been aged for 5, 30, and 100 years. The results revealed an increase in total prokaryotic biomass with an FP age; however, Shannon’s diversity index decreased significantly (p < 0.01). These results suggested that a unique microbial community structure evolved with uninterrupted use of the FP. The number of functional microorganisms, which could produce the flavor compounds of strong-aroma Baijiu, increased with the FP age. Among them, Clostridium and Ruminococcaceae are microorganisms that directly produce caproic acid. The increase of their relative abundance in the FPM might have improved the quality of strong-aroma Baijiu. Syntrophomonas, Methanobacterium, and Methanocorpusculum might also be beneficial to caproic acid production. They are not directly involved but provide possible environmental factors for caproic acid production. Overall, our study results indicated that an uninterrupted use of the FP shapes the particular microbial community structure in the FPM. This research provides scientific support for the concept that the aged FP yields a high-quality Baijiu. Exeley Inc. 2020-06 2020-05-12 /pmc/articles/PMC7324862/ /pubmed/32396715 http://dx.doi.org/10.33073/pjm-2020-018 Text en © 2020 Xu-Jia Wang et al. https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0/This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Microbiology WANG, XU-JIA ZHU, HONG-MEI REN, ZHI-QIANG HUANG, ZHI-GUO WEI, CHUN-HUI DENG, JIE Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title | Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title_full | Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title_fullStr | Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title_full_unstemmed | Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title_short | Characterization of Microbial Diversity and Community Structure in Fermentation Pit Mud of Different Ages for Production of Strong-Aroma Baijiu |
title_sort | characterization of microbial diversity and community structure in fermentation pit mud of different ages for production of strong-aroma baijiu |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7324862/ https://www.ncbi.nlm.nih.gov/pubmed/32396715 http://dx.doi.org/10.33073/pjm-2020-018 |
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